Posting on Tech Forums, Community, or Social Media to Promote App

Hi, Freelancers!

I want to promote our mobile app to different tech forums, communities, or other social media, like macrumors, reddit, instagram, youtube, etc. iOS & Android related resource is a must for our project since our mobile app is the tool for iPhone, iPad or Android content management. So, I am here to look for someone who could write and post posts successfully in different communities, especially on Forums, and the place you post must be related to tools app, so that it can bring some app new users.

Requirements:
1. All posts must be not deleted, and you'd better have a higher priority account related to iOS& Android forum or community.
2. Know how to guide users to try the mobile app, that is to say, a better call to action post.
3. Have a good command of grammar and spelling.
4. US, UK, AU, FR, DE forum/community/social account/group are preferred.
5. Familiar with Tech, iOS and Android topics. iPhone iPad users preferred.

This is a long-term project, this price is only for a testing-post, once ensure your post has a better result, we can build long-term cooperation.

PS:
1. When sending me the proposal for this project, please send me some samples of your post in this year.
2. When sending me the proposal for this project, please also prove it's your post/account.